Here’s how to change how long your Mac’s screen stays on.
On your Mac, click theApplelogo >System options.
Use the drop-down menu besideTurn display off on battery when inactiveto set timeout tweaks on battery power.

It can also affect the battery life of your Mac.
On your Mac, click theApplelogo.
ChooseNeverfrom theTurn display off on battery when inactivedrop-down menu.

Repeat the same process forTurn display off on power adapter when inactive.
On older macOS versions, go toBatteryandPower Adapter>Turn display off after>move the slider toNever.
Click theApplelogo >System tweaks.

poke the drop-down menu besideStart Screen saver when inactiveto choose how long before the screen saver turns on.
Why Would I Change My Screen Timeout?
Many people will be happy with the default Mac screen timeout options.

However, there are some cases where you may want to increase or reduce the time.
Here’s a look at them.
FAQ
you could wake up your Mac by pressing any key on the keyboard.

you could also try moving the mouse.
Some desktop Macs can be put to sleep with the keyboard shortcutOption+Command+Eject.

